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Production method of polyphthalamide (PPA) long-fiber-coated reinforced material

A technology of polyphthalamide and reinforcing materials, which is applied in the field of preparation of high-strength and high-temperature-resistant PPA reinforcing materials, can solve the problems of limited application fields, insufficient strength and stiffness to completely replace, and achieve good application prospects, long-term value-in-use effect

Inactive Publication Date: 2012-04-11
中山市纳普工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the strength and stiffness of PPA materials in the prior art are still not enough to completely replace non-fer

Method used

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  • Production method of polyphthalamide (PPA) long-fiber-coated reinforced material
  • Production method of polyphthalamide (PPA) long-fiber-coated reinforced material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh the plate by weight parts crystalline polyphthalamide: 38 parts, wetting agent KH550: 0.6 parts, antioxidant 1098 and 626 according to 1:2 compound: 1.0 parts, processing aid PETS: 2.0 parts share.

[0019] Composite materials were prepared as follows:

[0020] a. The raw material polyphthalamide is dehumidified and dried (dew point -40°C, drying temperature 130°C, time 6 hours);

[0021] b. Weigh the dried polyphthalamide into the high-temperature machine, add the corresponding wetting agent, antioxidant, and processing aid at the same time, and mix at high speed for 5 minutes;

[0022] c. Add the high-mixed raw and auxiliary materials into the twin-screw feeding port of the long fiber coating machine for melt extrusion, that is, plasticization; then add the long glass fiber that has passed through a 15m long drying tunnel and dried at 122°C into the long fiber The die head of the coating machine is infiltrated and coated. The glass fiber content is adjusted by...

Embodiment 2

[0027] Weigh semi-crystalline polyphthalamide in parts by weight: 39 parts, wetting agent 570: 0.6 parts, antioxidant 1098 and 626 according to 1:1 compound: 0.8 parts, processing aid silicone master Granules MB50-11: 1.9 parts. Composite materials were prepared according to the following steps:

[0028] a. Dehumidify and dry the raw material polyphthalamide (dew point -40°C, drying temperature 130°C, time 5.5 hours);

[0029] b. Weigh the dried polyphthalamide into the high-mixer, add the corresponding wetting agent, antioxidant and processing aid at the same time, and mix it for 5 minutes;

[0030] c. Add the high-mixed raw and auxiliary materials into the twin-screw feeding port of the long fiber coating machine, and carry out melt extrusion, and then add the long glass fiber dried at 125 °C through a 15m long drying tunnel into the long glass fiber bag The die head of the coating machine is soaked and coated, and the long glass fiber content is adjusted by the pulling sp...

Embodiment 3

[0035] Weigh semi-crystalline polyphthalamide in parts by weight: 40 parts, wetting agent KH550: 0.6 parts, antioxidant 1098 and 626 according to 1:0.4 compound: 0.8 parts, processing aids PETS and silicon 1:1 compound of ketone masterbatch MB50-11: 1.8 parts.

[0036] Composite materials were prepared according to the following steps:

[0037] a. Dehumidify and dry the raw material polyphthalamide (dew point -40°C, drying temperature 140°C, time 5 hours);

[0038] b. Weigh the dried polyphthalamide into the high-mixer, and add the corresponding wetting agent, antioxidant and processing aid at the same time, and then high-mix for 4 minutes;

[0039] c. Put the high-mixed raw and auxiliary materials into the twin-screw feeding port of the long fiber coating machine, carry out melt extrusion, and then add the long glass fiber dried at 130°C through a 15m long drying tunnel into the long glass fiber coating machine. The die head is soaked and coated, and the long glass fiber co...

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Abstract

The invention relates to the technical field of a high molecular material, and specifically relates to a preparation method of a polyphthalamide (PPA) reinforced material having high strength and high temperature resistance. The method comprises the following steps: a, weighing the following raw and auxiliary materials according to a certain ratio: 36-63 parts of PPA, 0.3-0.6 part of wetting agent, 0.4-1.0 part of antioxidant and 1.0-2.0 parts of processing agent; drying, wherein the PPA needs to be dried by a dehumidification drying method, the dew point is -40 DEG C, the drying time is 5-6 hours at 130-140 DEG C, and the drying temperature of long glass fibers is 120-130 DEG C; adding the dried plastics and auxiliary materials into a high-speed mixing machine, and mixing at a high speed for 3-5 minutes; adding the raw and auxiliary materials subjected to high-speed mixing into a long fiber coating machine to carry out plastication through a double-screw feed port, wetting the long fibers through a die head, and coating the long fibers onto the surface of the material, wherein the weight of the long fibers accounts for 60-35 parts of that of the total components; and drawing, and pelleting to obtain the finished product. By selecting the specific raw materials and controlling the specific process conditions, a PPA glass fiber reinforced material having the highest reinforcement can be produced, and can be widely used as the perfect substitute of metal materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a high-strength, high-temperature-resistant PPA reinforced material. Background technique [0002] Polyphthalamide (PPA for short) is a high strength, high rigidity, high heat resistance, high performance, low water absorption, UV resistance, high temperature resistance (290 ° C, 1.82 MPa), low temperature (-60 ° C); Good chemical resistance, especially resistance to gasoline, grease and coolant is much stronger than PA66, PA6, PA46. It also has superior environmental protection performance and can meet the German LFGB and American FDA food grade standards. Therefore, its research and application is one of the hot spots in the field of polymer materials. [0003] However, the strength and stiffness of PPA materials in the prior art are still not enough to completely replace non-ferrous metals such as aluminum, copper, zinc and their alloy materi...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K13/04C08K7/14B29C70/52
Inventor 冯波冯建棋
Owner 中山市纳普工程塑料有限公司
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